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-rw-r--r--bin/dash/src/mail.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/bin/dash/src/mail.c b/bin/dash/src/mail.c
index e6baaa1b..ec5bd103 100644
--- a/bin/dash/src/mail.c
+++ b/bin/dash/src/mail.c
@@ -80,7 +80,7 @@ chkmail(void)
 		int len;
 
 		len = padvance_magic(&mpath, nullstr, 2);
-		if (!len)
+		if (len == -1)
 			break;
 		p = stackblock();
 		if (*p == '\0')